What do you mean by "Those mpcenc.exe compiles"? I tested the one from musepack_bin_20071201.zip as well as the official SV8 mpcenc on a P3@800 Mhz with Windows XP and there's no problem. What parameters do you use for mpcenc in foobar?

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And if Warhol's a genius, what am I? A speck of lint on the ***** of an alien

Hmm. I tested both mpcenc.exe from the zip's above. I renamed them to mppenc.exe and put it into the fb2k directory. I used the fb2k (latest beta) internal slider setting q(8) for musepack, which is:

Encoder: mppenc.exeCommand line: "--silent --xlevel --quality 8 - %d"

In fb2k advanced preferences I set the converter priority to 6, same result. Ugh, same with my pentium 4 machine. I reckon something in fb2k's internal musepack command line does not work with the latest compiles...

Just tried the SV8 for the first time, and I was surprised to notice that the encoding speed was actually slower than with the previous SV7 build. I used the one from the pack named "musepack_bin_20071201.zip", since the link to the newer one that Antonski posted is dead.

I'm on XP Pro, and my processor is Intel's Core2Duo E7300. I got ~37x speed with the older SV7 version, but ~33x with the SV8 one.

Just tried the SV8 for the first time, and I was surprised to notice that the encoding speed was actually slower than with the previous SV7 build. I used the one from the pack named "musepack_bin_20071201.zip", since the link to the newer one that Antonski posted is dead.

I'm on XP Pro, and my processor is Intel's Core2Duo E7300. I got ~37x speed with the older SV7 version, but ~33x with the SV8 one.

You can try some newer build, although I doubt it will be faster. Since the format is not finalized, I guess it is not optimized for speed yet.Anyway, the speed is not the most important with Musepack, isn't it?

Foobar2K supports SV8 decoding since v0.9.4.5 and chapters support since v0.9.6.1. In fact, it was the first player supporting the new stream version (except the unofficial winamp plugin from musepack dev team).In order to use FB for encoding to musepack, you should set the path to mpcenc.exe, I guess. Maybe you have a n older version of Foobar2K anyway.